Rudder-indicator.



C. A. BENHAM & H. MGLAUGHLIN.

RUDDER INDICATOR. APPLICATION FILED MAR.8,1913.

1,1 10,737, Patented Sept. 15,1914.

2 SHEETSSHEET 1.

27 We (Jig J itzamay HIE NofRls PETERS co.. PHOTO-LITHO., WASHINGTON,L7. 1:.

c. A. BENHAM & H. MQLAUGHLIN.

RUDDER INDICATOR.

APPLICATION FILED MAR. B. 1913.

Patented Sept. 15, 1914.

2 SHEETSSHEET 2 Zzzzren/ars: M 611mm 14-11% M .(M

INF NORRIS PEIizHi (.n, PHOYO-LlTHO" WASHINGTON, n 4' 35 "nel ironremoved. Fig. 4 1s a section at line onARLnsAJ'BEnHA or CLEVELAND, OHIO,AND noen McLAuGI-Irm, or summon.

WISCONSINp J I nnnnnaiivnrca'ron.

To all whom it may concern:

Be it known that we, CHAnLiis A. Bum-1AM, of Cleveland, Ohio, and HUGHMOLAUGHLIN,

of Superior, Wisconsin, have invented certain new. and usefulImprovementsin Rudder-Indicators; andwe hereby declare the followingtobe/a full, clear, and exact description of the same, such as willenable othersskilled inthe art'to which it appertains to make and usethe same. a

The object of our invention is to enable the wheelsman, pilot orotherofficer of the ship to ascertain at-a glance the exact position ofthe rudder. For this purpose we provide a dial suitably mounted, and anindex finger to indicat upon the dial the exact position of the rudder.The; index finger is controlled by means of a double cylinder at theforward end of theship and a double cylinder at the rear end of the shipnear the rudder, the forward: cylinder being operated by the rearcylinder through the means of liquid, preferably oil, passing from therear cylinder to the forward cylinder by means of suitable pipeconnections:

In the accompanying drawings Figure 1 is a plan view of the deckof avessel showing the locationof the mechanism in the pilot house and alsothe location of the mechanism at the after en'dgof the ship forward ofthe rudder and the pipes connecting the same, F ig.- 2 isan invertedplan view .of the mechanism located at the stern of the vessel near therudder. Fig. 3 is a side elevatlon of the same with flanges of thechanview of part of the structurein Fig. 8. Figs.

10 and 11 are details of the check valves shown in Fig. 6. j

A is the frame of the indicator and is attached to the wall of the pilothouse A as indicated in Fig. 7. Mounted on each end of the frame A aremetallic pieces B, B

threaded to receive the pipes F, F which extend through the frame. Thepistons E,

V Specification of Letters Patent. Patented Se'pt.15, 19 14.Applicationfiled March 8, 1913. Serial No. 752,810.

E arev hollow asushown in Fig. 9 and are also secured to the parts B, BOpposite the pipes F,-F the parts 13,13 are threaded to receive thebolts 0, 0 for attaching the bar 0. Mounted between the frame Aand thebar C is the cylinder D. The cylinder D.

has two channels adapted to engage slides a a permitting longitudinalmovement of the cylinder. The cylinder D is bored from each end and isprovided with stufiing boxes (Z and CF. The pistons E and E ,.are turnedtrue and fitted into the ends. of the cylinder D and stufling boxes cland The upper surface of the cylinder D is provided with a rack ortoothed portiond adapted to engage the teeth at the lower end of theindicator finger a. Adjacent to the frame A the pipes G, G are connectedwith Ts 11,111

and are also connected. throughra bypass valve 1. The pipes J,.J -,Qleadfrom the m mar s." ra rnm orricn Ts H, -H to the pistons 'P, F shown inFigs. 2 and 3, and located at the 'sternof the vessel.

k is a pipe leading. to the check valvesK and L as shown in Fig. 6. Thepipe M leads to an oi'lreservoir; or tank R. The frame Ais mounted onthe-wall of the pilot house A (Fig; 7) bymeans of bolts projecting.

through the supports a a and'fastenedat each end in anydesired manner. l1 The mechanism at the stern of the vessel consists of thecylinder O,mounted on the channel iron or frame N, (as shown in Fig. 2,) by; meansof the dovetailed slide N The cylinder() is provided at each end withstufling boxes 0, 0 The cylinder and stuffa ing boxes 0, 0 are bored toreceive the pistons P, P the cylinder being bored from each end, with asolid metal wall between the ends as shown inFig. TX and in dotted linesin Fig. VIII. The pistons are turned true and rigidly mounted in theblocks a, 11. the blocks being in turnmounted on the frame N. Thecylinder 0 is connected with the rudder tiller or quadrant T by means ofthe pin 0 and rod Q.

The check valve K is an ordinary form of upright check valve inverted topermit the oil to flow into the cylinder and the connecting pipes, whilethe check valve L is provided with an adjustable spring Z to permit theoil to return to the tank whenever by reason of adjustment or otherwise,there shall be an excess of pressure in either the right hand or lefthand cylinders.

7 The operation of the device isas follows: The oil .enters through thepipe M,'the check valve'K, pipe 71 into both ends of the cylin-,

der l) and from there through the connecting pipes into each end of thecylinder 0, the rudder being placed amidships when the oil is,

admitted, and thepointer acbeing set to indi i I cate the positionl o'fthe rudder. The valve I bination with the' rudder of a double cylin-' 1der suitably mounted near the steering is then closed. When thewheelsman shifts {the rudder to port, the rod will pull the" cylinder '0in the direction-of the part B and thereby move the index finger to theright hand indicating that therudderhas thetcylinders is so proportionedthat, the movement of the-rudder to the full extent of its movement toport will move the finger to the extreme right, of the dial, and the"movement of the rudder to starboard to the full extent, will mov theindex finger to the extreme left of the dial, and thus the position ofthe rudder will at all times be accuratelyin'dicatedon the dial by thepointer. It is immaterial what kind of fluid is used to operate theapparatus, but oil is prefer- Uwheel, a double cylinderv located andsuitably mounted near the rudder, pipes filled with oil connectingfthecorresponding ends of said cylinders, a pointer connected with the coiiesof this patent may be obtained for five cents each, by addressingthe) Commissioner ,pf' ifatents,

forward cylinder, and anoperative connection" between the after cylinderand the rudder whereby the pointer through the acbeen moved to port. Thedisplacement of' tion of the cylinders and the oil'moves with the rudderand indicates itsflposition sub -t '1 sta'ntially as and for the purposespecified.

2'. A rudder indicator for vessels the combination with the'rudder of 1ad011ble'cylin-- der suitably mounted near the steering wheel, :a doublecylinder suitably mounted near the rudder, pipes filled'with oil con---necting the correspondingends of said cyli'nder, a pointer connected,with the forward cylinder, a dial suitably marked and mount ed near saidpointer, and an operative conneotion between the after cylinder and therudderfwhereby. the pointerthrough theac tion'of the cylinder and theoil moves with the rudder and indicates'its position, sub

stantiallyas and for" the purpose specified.

3.In a rudder indicator for vessels the combination with therudder ofladouble cylinder suitably mounted. near the steering wheel, a doublecylinder suitably, mounted near the rudder, pipes filled with oil.,coni,

necting the corresponding ends of said cylinders, an Oll tank connectedwlth said 1311368,

a pointer connected with the forward cylin der, a spring check valvebetween said pipes and the oil tank whereby upon an excess ofpressurebeing produced in either side of the cylinders the oil ispermitted to how back into the tank mtil such excessof pressure isrelieved, substantially as and for the purpose speclfie'd. i v e y Inwitness whereof we hereunto set our hands at- -Gleveland, Ohio, this 3rdday of March, 1913.' I l v CHAS. A. BE-NHAM.

'lVitnessesf v v ALFRED CLUM,

I E. A." PETERS.

Washington, :0. o.

HUGH M LAUGHL N-f

